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/****************************************************************************
* NCSA HDF *
* Software Development Group *
* National Center for Supercomputing Applications *
* University of Illinois at Urbana-Champaign *
* 605 E. Springfield, Champaign IL 61820 *
* *
* For conditions of distribution and use, see the accompanying *
* hdf/COPYING file. *
* *
****************************************************************************/
#ifdef RCSID
static char RcsId[] = "@(#)$Revision$";
#endif
/* $Id$ */
/*LINTLIBRARY */
/*+
FILE
hdf5meta.c
HDF5 "Meta-Object" routines
EXPORTED ROUTINES
H5Mcreate -- Create an object
H5Mcopy -- Copy an object
H5Mget_file -- Get the file ID for an object
H5Mrelease -- Release access to an object
LIBRARY-SCOPED ROUTINES
LOCAL ROUTINES
H5M_init_interface -- initialize the interface
+ */
#include "hdf5.h"
#include "H5private.h" /* Generic functions */
#include "H5Cproto.h" /* Template interface */
#include "H5Tproto.h" /* Datatype interface */
#include "H5Mprivate.h" /* Meta-object interface */
#include "H5Cprivate.h" /* Template interface */
#define PABLO_MASK H5M_mask
/*--------------------- Locally scoped variables -----------------------------*/
/* Whether we've installed the library termination function yet for this interface */
static intn interface_initialize_g = FALSE;
/*------------------_-- Local function prototypes ----------------------------*/
static herr_t H5M_init_interface(void);
/*--------------------------------------------------------------------------
NAME
H5M_init_interface -- Initialize interface-specific information
USAGE
herr_t H5M_init_interface()
RETURNS
SUCCEED/FAIL
DESCRIPTION
Initializes any interface-specific data or routines.
MODIFICATIONS
Robb Matzke, 4 Aug 1997
Changed the FUNC variable value to H5M_init_interface.
--------------------------------------------------------------------------*/
static herr_t H5M_init_interface(void)
{
herr_t ret_value = SUCCEED;
FUNC_ENTER (H5M_init_interface, NULL, FAIL);
FUNC_LEAVE(ret_value);
} /* H5M_init_interface */
/*--------------------------------------------------------------------------
NAME
H5M_find_type
PURPOSE
Find the type of meta-object to issue a method call on
USAGE
intn H5M_find_type(type)
hobjtype_t type; IN: Type of object to create
RETURNS
Returns the index of the type in the array of methods on success, or FAIL
on failure.
DESCRIPTION
This function performs a search to find the index of the type of a
meta-object in the array of function pointers.
--------------------------------------------------------------------------*/
static intn H5M_find_type(hobjtype_t type)
{
intn i; /* local counting variable */
intn ret_value = FAIL;
FUNC_ENTER(H5M_find_type, H5M_init_interface, FAIL);
/* Clear errors and check args and all the boring stuff. */
H5ECLEAR;
/*
* Currently this uses a stright linear search, which can easily be changed
* to a binary search when it becomes too slow.
*/
for(i=0; i<(sizeof(meta_func_arr)/sizeof(meta_func_t)); i++)
if(type==meta_func_arr[i].type)
HGOTO_DONE(i);
done:
if(ret_value == FAIL)
{ /* Error condition cleanup */
} /* end if */
/* Normal function cleanup */
FUNC_LEAVE(ret_value);
} /* end H5M_find_type() */
/*--------------------------------------------------------------------------
NAME
H5Mcreate
PURPOSE
Create a new HDF5 object.
USAGE
hatom_t H5Mcreate(owner_id, type, name)
hatom_t owner_id; IN: Group/file which owns this object
hobjtype_t type; IN: Type of object to create
const char *name; IN: Name of the object
RETURNS
Returns ID (atom) on success, FAIL on failure
DESCRIPTION
This function re-directs the object's creation into the appropriate
interface, as defined by the function pointers in hdf5fptr.h
--------------------------------------------------------------------------*/
hatom_t H5Mcreate(hatom_t owner_id, hobjtype_t type, const char *name)
{
intn i; /* local counting variable */
hatom_t ret_value = SUCCEED;
FUNC_ENTER(H5Mcreate, H5M_init_interface, FAIL);
/* Clear errors and check args and all the boring stuff. */
H5ECLEAR;
if(type<=BADGROUP || type>=MAXGROUP)
HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
i=H5M_find_type(type);
if(meta_func_arr[i].create==NULL)
HGOTO_ERROR(H5E_INTERNAL, H5E_UNSUPPORTED, FAIL);
ret_value=meta_func_arr[i].create(owner_id,type,name);
done:
if(ret_value == FAIL)
{ /* Error condition cleanup */
} /* end if */
/* Normal function cleanup */
FUNC_LEAVE(ret_value);
} /* end H5Mcreate() */
/*--------------------------------------------------------------------------
NAME
H5Mcopy
PURPOSE
Copy an HDF5 object.
USAGE
hatom_t H5Mcopy(oid)
hatom_t oid; IN: Object to copy
RETURNS
SUCCEED/FAIL
DESCRIPTION
This function re-directs the object's copy into the appropriate
interface, as defined by the function pointers in hdf5fptr.h
--------------------------------------------------------------------------*/
hatom_t H5Mcopy(hatom_t oid)
{
group_t group=H5Aatom_group(oid); /* Atom group for incoming object */
intn i; /* local counting variable */
herr_t ret_value = SUCCEED;
FUNC_ENTER(H5Mcopy, H5M_init_interface, FAIL);
/* Clear errors and check args and all the boring stuff. */
H5ECLEAR;
if(group<=BADGROUP || group>=MAXGROUP)
HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
i=H5M_find_type(group);
if(meta_func_arr[i].copy==NULL)
HGOTO_ERROR(H5E_INTERNAL, H5E_UNSUPPORTED, FAIL);
ret_value=meta_func_arr[i].copy(oid);
done:
if(ret_value == FAIL)
{ /* Error condition cleanup */
} /* end if */
/* Normal function cleanup */
FUNC_LEAVE(ret_value);
} /* end H5Mcopy() */
/*--------------------------------------------------------------------------
NAME
H5Mflush
PURPOSE
Flush an HDF5 object out to a file.
USAGE
hatom_t H5Mget_file(oid)
hatom_t oid; IN: Object to flush
RETURNS
SUCCEED/FAIL
DESCRIPTION
This function re-directs the object's flush into the appropriate
interface, as defined by the function pointers in hdf5fptr.h
--------------------------------------------------------------------------*/
hatom_t H5Mflush(hatom_t oid)
{
group_t group=H5Aatom_group(oid); /* Atom group for incoming object */
intn i; /* local counting variable */
herr_t ret_value = SUCCEED;
FUNC_ENTER(H5Mflush, H5M_init_interface, FAIL);
/* Clear errors and check args and all the boring stuff. */
H5ECLEAR;
if(group<=BADGROUP || group>=MAXGROUP)
HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
i=H5M_find_type(group);
if(meta_func_arr[i].flush==NULL)
HGOTO_ERROR(H5E_INTERNAL, H5E_UNSUPPORTED, FAIL);
ret_value=meta_func_arr[i].flush(oid);
done:
if(ret_value == FAIL)
{ /* Error condition cleanup */
} /* end if */
/* Normal function cleanup */
FUNC_LEAVE(ret_value);
} /* end H5Mflush() */
/*--------------------------------------------------------------------------
NAME
H5Mget_file
PURPOSE
Get the file ID an HDF5 object.
USAGE
hatom_t H5Mget_file(oid)
hatom_t oid; IN: Object to query
RETURNS
SUCCEED/FAIL
DESCRIPTION
This function re-directs the object's query into the appropriate
interface, as defined by the function pointers in hdf5fptr.h
--------------------------------------------------------------------------*/
hatom_t H5Mget_file(hatom_t oid)
{
group_t group=H5Aatom_group(oid); /* Atom group for incoming object */
intn i; /* local counting variable */
herr_t ret_value = SUCCEED;
FUNC_ENTER(H5Mget_file, H5M_init_interface, FAIL);
/* Clear errors and check args and all the boring stuff. */
H5ECLEAR;
if(group<=BADGROUP || group>=MAXGROUP)
HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
i=H5M_find_type(group);
if(meta_func_arr[i].get_file==NULL)
HGOTO_ERROR(H5E_INTERNAL, H5E_UNSUPPORTED, FAIL);
ret_value=meta_func_arr[i].get_file(oid);
done:
if(ret_value == FAIL)
{ /* Error condition cleanup */
} /* end if */
/* Normal function cleanup */
FUNC_LEAVE(ret_value);
} /* end H5Mget_file() */
/*--------------------------------------------------------------------------
NAME
H5Mrelease
PURPOSE
Release access to an HDF5 object.
USAGE
herr_t H5Mrelease(oid)
hatom_t oid; IN: Object to release access to
RETURNS
SUCCEED/FAIL
DESCRIPTION
This function re-directs the object's release into the appropriate
interface, as defined by the function pointers in hdf5fptr.h
--------------------------------------------------------------------------*/
herr_t H5Mrelease(hatom_t oid)
{
group_t group=H5Aatom_group(oid); /* Atom group for incoming object */
intn i; /* local counting variable */
herr_t ret_value = SUCCEED;
FUNC_ENTER(H5Mrelease, H5M_init_interface, FAIL);
/* Clear errors and check args and all the boring stuff. */
H5ECLEAR;
if(group<=BADGROUP || group>=MAXGROUP)
HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
i=H5M_find_type(group);
if(meta_func_arr[i].release==NULL)
HGOTO_ERROR(H5E_INTERNAL, H5E_UNSUPPORTED, FAIL);
ret_value=meta_func_arr[i].release(oid);
done:
if(ret_value == FAIL)
{ /* Error condition cleanup */
} /* end if */
/* Normal function cleanup */
FUNC_LEAVE(ret_value);
} /* end H5Mrelease() */
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